<template>
    <div>

        <!-- 顶部区域滚动 -->
        <div
            class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted"
        >
            <div class="mui-scroll">
                <a :class="['mui-control-item', item.id == 0 ? 'mui-active' : '']" v-for="(item,i) in Category" :key='i' @click="getPhotoListByCateId(item.id)">{{item.title}}</a>
            </div>
        </div>


        <!-- 列表取 -->
        <ul class="photo-list">
            <router-link v-for="item in list" :key="item.id" tag='li' :to="'/photoInfo/'+item.id">
                <img v-lazy="item.img_url">
                <div class="info">
                <h1 class="info-title">{{ item.title }}</h1>
                <div class="info-body">{{ item.zhaiyao }}</div>
                </div>
            </router-link>
        </ul>


    </div>
</template>


<script>
import mui from '../../lib/mui/js/mui.min'   //引入mui的js文件，顶部区域滚动依赖js文件
export default {
    data(){
        return {
            Category:[],
            list:[]
        }
    },
    mounted(){
        this.$nextTick(()=>{  //dom更新完成之后执行
            mui('.mui-scroll-wrapper').scroll({  //初始化区域滚动，文档复制
                deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
            });
        })
    },
    created(){
        this.getAllCategory()
        this.getPhotoListByCateId(0)
    },
    methods:{
        getAllCategory(){  //获取分类
            this.$http.get('api/getimgcategory').then(res=>{
                // console.log(res)
                if(res.body.status==0){
                    res.body.message.unshift({title: "全部", id: 0})
                    this.Category=res.body.message
                    // console.log(this.Category)
                }else{

                }
            })
        },
        getPhotoListByCateId(id){
            this.$http.get('api/getimages/'+id).then(res=>{
                // console.log(res)
                this.list=res.body.message
                // console.log(this.list)
            })
        }
    }
}
</script>

<style lang="scss" scoped>
    * { touch-action: pan-y; }//去掉浏览器触摸报错
.photo-list {
  list-style: none;
  margin: 0;
  padding: 10px;
  padding-bottom: 0;
  li {
    background-color: #ccc;
    text-align: center;
    margin-bottom: 10px;
    box-shadow: 0 0 9px #999;
    position: relative;
    img {
      width: 100%;
      vertical-align: middle;
    }
    img[lazy="loading"] {
      width: 40px;
      height: 300px;
      margin: auto;
    }

    .info {
      color: white;
      text-align: left;
      position: absolute;
      bottom: 0;
      background-color: rgba(0, 0, 0, 0.4);
      max-height: 84px;
      .info-title {
        font-size: 14px;
      }
      .info-body {
        font-size: 13px;
      }
    }
  }
}
</style>